You can contact O2 on +44 844 809 0200 and pay using a credit card, or if you still have the O2 phone, you can call 202 from the phone and make a payment there.
You can contact O2 on +44 844 809 0200 and pay using a credit card, or if you still have the O2 phone, you can call 202 from the phone and make a payment there.
Though cancelling the payment method does not mean you have cancelled the contract! If you haven't given notice of 30 days, the advice above for payment will be applicable until you receive a zero bill after cancelling the contract.
